Manchester, New Hampshire Weather
Apples hang heavy on the branch. Day 93 of summer. Read this microseason across nine climate regions →
Manchester weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:26 AM EDT · Open-Meteo
- TodaySep 21Overcast13%0.02″68°50°—
- TuesdaySep 22Overcast——64°48°-4°
- WednesdaySep 23Overcast——62°43°-2°
- ThursdaySep 24Overcast——65°41°+3°
- FridaySep 25Overcast46%—71°43°+6°
- SaturdaySep 26Overcast50%—74°49°+3°
- SundaySep 27Overcast45%—75°52°+1°
Air quality now AQI 36 · Good
AQI 36 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~93%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~93%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 4.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:26 PM
- Moonset
- 12:53 AM
- In sign
- ♑︎ Capricorn
Apples hang heavy on the branch
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Manchester at a glance
- Today vs. normal: Today averages 59°F (high 68°F, low 50°F), about the 60°F normal for Sep 21
- Last frost: April 30 (1991–2020 median, NOAA station 4 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Manchester
- Mon68°50°13%
- Tue64°48°0%
- Wed62°43°0%
- Thu65°41°7%
- Fri71°43°46%
- Sat74°49°50%
- Sun75°52°45%
- Mon71°50°25%
- Tue72°49°13%
- Wed72°50°23%
- Thu65°56°23%
- Fri69°50°19%
- Sat63°44°10%
- Sun73°47°15%
- Mon71°57°23%
- Tue56°41°19%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Manchester
Interactive wind and temperature map centered on Manchester — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 11) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Manchester
Manchester sits in Hillsborough County, where the year’s longest day runs 15h 22m of daylight and its shortest just 9h 0m — a swing of +6h 21m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Nashua, the state’s largest city, lies about 16 miles to the S. The nearest town Manchester tracks is Nashua, roughly 16 miles to the S.
Air quality in Manchester
Air quality in Manchester’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 37). See the full air-quality history for Manchester.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash, fall brassicas, carrots | lettuce, peas, spinach, beans, summer squash, garlic |
| August | — | tomatoes, peppers, beans, summer squash, garlic |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Manchester peaks at about 71°F in July and bottoms near 22°F in January; October brings the heaviest rain (4.4 inches) and January the least (2.7 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 22° | 2.7″ | 7 |
| February | 25° | 2.7″ | 6 |
| March | 33° | 3.2″ | 6 |
| April | 46° | 3.5″ | 7 |
| May | 57° | 3.4″ | 8 |
| June | 66° | 4.3″ | 8 |
| July | 71° | 3.6″ | 7 |
| August | 69° | 3.7″ | 6 |
| September | 62° | 3.9″ | 6 |
| October | 50° | 4.4″ | 7 |
| November | 39° | 3.5″ | 7 |
| December | 29° | 3.8″ | 7 |
Regional context
Similar climates South Hooksett, NH, Pinardville, NH, East Merrimack, NH
In Manchester, NOAA NCEI 1991-2020 normals put January near 22°F and July near 71°F — a 49°F seasonal arc — with about 42.5 inches of precipitation over 81 rainy or snowy days.
No season owns Manchester's rain: October reaches 4.4 inches across 6.6 days and January keeps 2.7 inches on 6.6, an even spread through Manchester's year. It is a balanced pattern Manchester shares with places like South Hooksett, NH, Pinardville, NH and East Merrimack, NH.
Manchester reaches its last hard frost near April 30; that is the cue for kale, peas, spinach, and parsnips. Manchester's heat-lovers — tomatoes, peppers, squash — hold off until Manchester's frost risk clears, 10-14 days on. By October 11, frost is back in Manchester — protect or harvest anything tender. Open lawns in Manchester whiten first when frost returns.
Similar climates: South Hooksett, NH, Pinardville, NH, East Merrimack, NH, Klondike Corner, NH, Suncook, NH.
Frequently asked
- When does it freeze in Manchester?
- Manchester's last spring frost lands near April 30, and in Manchester the first fall frost follows around October 11.
- What is the rainy season in Manchester?
- Manchester sees its heaviest rain in October (around 4.4 inches), part of roughly 43 inches a year.
- What is the warmest month in Manchester?
- July is Manchester's warmest month, averaging about 71°F.
- What is the coldest month in Manchester?
- Manchester bottoms out in January, with a mean near 22°F.
- When can I start a vegetable garden in Manchester?
- Frost-hardy sowings begin at April 30 in Manchester; warm-season starts follow two weeks on.
- How many rainy days does Manchester get?
- Manchester averages about 81 days with measurable rain or snow each year.
- What hardiness zone is Manchester?
- Manchester's hardiness zone tracks its winter low; with January near 22°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Manchester?
- Manchester's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Manchester?
- See this week's day-by-day rain chances for Manchester in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Manchester?
- Current conditions for Manchester and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Manchester forecast updated?
- The Manchester forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Manchester?
- Today's sunrise and sunset times for Manchester are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Manchester?
- The next few days in Manchester's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Manchester sits at 43.0°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Manchester
- 03101
- 03102
- 03103
- 03104
- 03105
- 03108
- 03109
- 03111